Where should I setup a bank account in London?

"Before retiring in London, expats should research the cost of living in the city, as it is one of the most expensive cities in the world. They should also familiarise themselves with the UK's taxation system, as this will affect their pension income. Additionally, expats should consider the availability of healthcare services, as well as the quality of public transport in the city. It is also important to research the different neighbourhoods in London, as each area has its own unique character and amenities. Finally, expats should consider the language barrier, as English is the primary language spoken in London," remarked another expat in London, England.